Improvement in shaft-couplings



NTTe STATES PATENT OFFICE. i

GEORGE L. DAUM, OF BETHLEHEM, PENNSYLVANIA, ASSIGNOR TO HIMSELF ANDHERMAN A. DOSTER. OF SAME PLAGE.

IMPROVEMENT IN SHAFT-COUPLINGS.

Specification forming part of Letters Patent No. 55,198, dated May 29,1866.

To all whom tt may concern:

Beit known that I, GEORGE L. BAUM, of Bethlehem, Northaml'iton county,State of Pennsylvania, have invented a new and useful Improvement inShaft-Coupling; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the saine, reference being had to the accompanying drawings, forming part ot' this Specication, in which- Figure1 is a sectional view ot' in v improved shaft-coupling, taken throughthe lineyy, Fig. 2, part of the shaft being broken away. Fig. 2 is across-section ot' the same, taken through the line a' 01;, Fig. 1. Fig.3 is a detail view of the key. Fig. 4 is a detail view of a portion ofthe shaft.

Similar letters of reference indicate like parts.

My invention has for its object to furnish a shaft-conpling simple inconstruction, easy of] adjustment, and which will hold the shaft'sevcurely coupled; and it consists of ashaftcoupling formed by combininga shell, key, and set-screws with the ends of the shaft to be coupled,as hereinafter more fully described.

A and B are the ends of the shaft to be coupled, in the sides of whichis formed a slot, O, the ends of which are deepened into holes c, asshown in Figs. 1 and 4.

D is a key fitting into the slot O, as shown in Fig. 1. This key iswider than the depth of the slot, and at its ends are formed projectionsd, fitting into the holes c, formed in the l ends of the slot C. Thiskey prevents the ends ofthe shaft from being drawn apart and alsoinsures both parts of the shalt revolving together.

E is the shell which tits upon the shaft, covering the joint formed bythe meeting ot' the shafts A and B.

lt should be observed that the bottom of the slot O-is slightlyinclined-that is, the said slot is deeper at one end than at theother-which gives to the projecting part Aof the key D a wedge-shapedappearance, as seen in Fig. 1. Upon the inside of the shell E is formeda groove, as shown in Figs. l and L'. This groove fits over the key D,clamping the key and ends ofthe shaft irmly together. This shell is keptfrom slipping' from its place by 'set-screws F, which pass in throughthe side of the shell E and press against the ends A and B of the shaft,as shown in Fig. 1. These holes are eountersunk, so that the heads ofthe screws F may be beneath the outer surface of the shell E, and thusbe out oft-he way and not liable to catch upon the belting.

l claim as new and desire to secure by Letters Patent- An improvedshaft-coupling formed by combining the shell E, key D, and set-screws Fwith the ends of the shafts to b e coupled, substantially as described,and for the purpose set forth.

GEO. L. BAUM. Vitnesses FRED. R. BARKER, BENJ. F. SOHNELLER.

